How severe is CVE-2026-42657?

CVE-2026-42657 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-42657 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42657?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-42657 have an EU (EUVD) identifier?

Yes. CVE-2026-42657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36822.

When was CVE-2026-42657 published?

CVE-2026-42657 was published on 2026-06-15 and last updated on 2026-06-17.

CVE-2026-42657

CVE-2026-42657 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1284.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36822
Weakness: CWE-1284
Published: 2026-06-15
Last modified: 2026-06-17

Description

Unauthenticated Other Vulnerability Type in Contest Gallery <= 28.1.7 versions.

Frequently asked questions

What is CVE-2026-42657?: Unauthenticated Other Vulnerability Type in Contest Gallery <= 28.1.7 versions.
How severe is CVE-2026-42657?: CVE-2026-42657 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-42657 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-42657?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-42657 have an EU (EUVD) identifier?: Yes. CVE-2026-42657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36822.
When was CVE-2026-42657 published?: CVE-2026-42657 was published on 2026-06-15 and last updated on 2026-06-17.

References

https://patchstack.com/database/wordpress/plugin/contest-gallery/vulnerability/wordpress-contest-gallery-plugin-28-1-7-other-vulnerability-type-vulnerability?_s_id=cve

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